Tamping-machine.



0. NOLAN.

TAMPING MACHINE.

APPLICATION FILED MAILZL 1912.

1,072,855, Patented Sept. 2, 1913.

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0. NOLAN.

TAMPING MACHINE.

APPLICATION FILED 141mm, 1912.

Patented Sept. 2, 1913.

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OLIVER NOLAN, OF ST) PAUL, MINNESOTA, ASSIGNOR T0 CLARENCE R. WILKINSON, OF ST. PAUL, MINNESOTA.

TAMPING-MACHINE,

To all whom it may concern: a I Be it known that I. OLIVER N f-iw T1 citizen of the United ,atates, residing at St. Paul, in the county of Ramsey and State of lvli'nnesota, have invented new and useful Improvements in Tamping-Machines, of which the following is a specification.

My invention relates to improvements in tamping machines of the class illustrated in my application for patent filed July 20th, 1911, Serial No. 639,639, in which is disclosed a plurality of vertically movable tamping bars adapted to fall by gravity, lifting mechanism for raising the bars, and means for securing said bars in elevated position and for releasing the same therefrom. In this class of machine damage sometimes results from the untimely fall of tamping bars.

The object of my invention is to provide improved means for securing the tamping bars in elevated position to operatively connect said bars with the lifting mechanism and to protect said mechanism and the tamping bar connections from injurious contact with each other.

In the accompanying drawings, lligure 1 is a rear elevation of my improved tamping machine; Fig. 2 is a side elevation otthe same, Fig. 3 is a plan View in detail illustrating the guide bar and its adjustable slides; and Fig. l a sectional View taken on the line l-l of Fig. 1 H

Referring to said drawings, I have illustrated a frame 10, tamping bars or stamps 12, power shaft 18, pulley l9 and links or rods 23, substantially as described in the application for patent on improvements in tamping machines above mentioned, and further description of said parts is not thought to be necessary.

In my improved construction, I have ar ranged a plurality of slotted T bars 11 transversely on the frame lOto receive and form guides for the tamping bars 12, and have provided each of the radial arms 20 with beveled angular portions 21.. The arms 20 are spaced laterally and angularly on the shaft 18 and are adjustably secured thereto by means of set screws 22. The guide bar 27- is supplied with adjustable slides 28 and E29 and is mounted on the frame 10. These slides together with the pins 30 in one of Specification of Letters Patent.

Application filed March 21,

the T bars 11 :tor'm guidesto'direct the rods Patented Sept. 2, .1 913.

1912. Serial No. 685,322.

23 as the tamping bars 12 rise and fall. A """,f* 2": is vided at the upper end of each rod 23 and is placed to rest in the path oil one of the arms 20 when its tamping bar is lowered. The tamping bars 12 are carricd upward and thrown to elevated positions by the revolving arms 20 which re sp-cctivcly engage the tappets 26. These bars tall by gravity, and are repeatedly raised by said arms 20. During the upward stroke of the tamping bars the rods 23 are free to tilt, and therefore the tappets 2t) slide from the beveled portions 21 of their respective arms 20.

To control the action of the tamping bars I have provided the :lollowing improved mechanism: The upwardly inclined dogs 23 are pivoted on one of the T bars 1.1, each of said dogs being tlormed with a forwardly projecting lug 3 .1; and a socket 35 at its upper end. The operating bar 36, slidable in the trame 10, is provided with slots 37 adapted to receive the pintles 38 in the dogs 33. These dogs are connected by springs 35) with the frame 10, said springs being adapted to tilt and lower said dogs and move said bar. The lever 40 pivoted on one end of thebar 36 is adapted to move the same in a direction to elevate said dogs, and is arrangedto term a stop for securing these dogs in their elevated and lowered positions.

The operation of each of the tamping bars and its associated mechanism is identical, and a description of one will therefore answer for allrlV hen the machine is in action the lever 4:0 is stationed in the position, as shown in dotted lines in Fig. 1, with the dog 33 elevated. To discontinue the operation, this lever is raised, thus pern'litting the spring 39 to movethe bar 36 and lower the upper end of thedog 33 into the path of the tappet 26, as indicated in solid lines in Fig. 1. As the tampiug bar rises and approaches the end of its upward stroke the tappet 2G strikes the dog 33. The rod 23 is tilted by the impact of said tappet against the dog and bears against the adjustable slide 2S) which guides said rod and causes the tappet 26 to throw the dog 33 back out oi. the path of the tappet against the action of its spring 39. This spring immediately returns said dog to its original position and as the tamping bar starts to fall the lug 3 k and the slide 29 impinge against opposite sides of said u dog rod, and guide the tappet 26 into the socket 35 of the dog 33. -'Ihis dog secures the tappet 26 in position out of the path of the radial arm 20, thus holding said tamping bar in elevated and inoperative position. To continue the operation the lever 40 is lowered to its original position, as indicated in dotted lines, thus moving the bar 36 against the action of the spring 39 and raising the This movement of the dog 33 carries the tappet 26 into the path of the radial arm 20 and slightly springs the rod 23 over the adjustable slide 28. The radial arm 20 strikes the end of the tappet 26 and elevates the tamping bar a sufficient distance to raise said tappet 26 from the socket The rod 23 then rebounds from the dog 33, thus permitting the tamping bar to fall into operative position unimpeded by the rotating arm 20.

What I claim as new and desire to protect by Letters Patent, is:

1. In a device of the class described, the combination of a frame, vertically movable tamping bars on the frame adapted to fall by gravity, a tappet for each bar, said tappets being pivotally attached to said bars and arranged to tilt thereon as the same rise or fall, power driven arms adapted to strike said tappets and raise said bars, and means for engaging the tappets to secure the bars in elevated inoperative posit-ions, said means being also adapted to carry and locate the tappets in positions to be struck by said arms whereby the tappets are disengaged from Ehe dogs to permit the fall of the tamping ars.

2. In a tamping machine, a frame, vertical tamping bars on said frame adapted to fall by gravity, a shaft revoluble on the frame, radial arms adjustable angularly and laterally on said shaft, a rod pivot-ally con nected with each tamping bar and provided with a tappet at its upper end adapted to engage one of said radial arms, adjustable slides on said frame for directing said rods, dogs on the frame for engaging said tappets and holding said tamping bars in elevated positions and means for shifting said dogs to carry said tappets into or out of the paths of said radial arms.

3. In a tamping machine, a frame, vertical tamping bars on said frame adapted to fall by gravity, a shaft revoluble on the frame, radialarms adjustable angularly and laterally on said shaft, a rod connected with each tamping bar and provided with a tappet adapted to engage one of said radial arms, guides for each rod, dogs on the frame for engaging said tappets and holding said bars in elevated and inoperative positions and means for shifting said dogs to carry said tappets into the paths of said radial arms and spring said rods over their guides.

41:. In a tamping machine, a frame, vertical tamping bars on said frame adapted to fall by gravity, a shaft revoluble on the frame, radial arms adjustable angularly and laterally on said shaft, a rod connected with each tamping bar and provided wit-h a tappet adapted to engage one of said radial arms, dogs pivotally arranged on the frame for engaging said tappets and holding said bars in'elevated positions, springs between said frame and dogs for tilting the latter, an operating bar slidable on the frame and connected with said dogs, and a lever on said bar for moving the same to shift and carry said tappets into or out of the paths of said radial arms. 7 5. In a tamping machine, a frame, vertical tamping bars on said frame adapted to fall by gravity, a shaft revoluble on the frame, radial arms on said shaft, a rod connected with each tamping bar and provided with a tappet adapted to engage one of said radial arms, adjustable slides on said frame, dogs supplied with lugs and sockets and pivoted on the frame for engaging said tappets and holding said bars in elevated positions, springs connecting saiddogs and frame, said adjustable slides and lugs being adapted to guide said rods and direct said tappets into the sockets of said'dogs, and means for shifting said dogs to carry said tappets into or out of the paths of said radial arms. 7 v y 6. In a tamping machine, a frame, vertical tamping bars on said frame adapted to fall by gravity, a shaft revoluble on the frame, radial arms having beveled angular portions at their ends and adjustable angularly and laterally on said shaft, a rod pivotally connected with each tamping bar and provided with a tappet at its upper end adapted to engage one of said beveled portions, means for placing said tappet in contact with said beveled portions when the plungers are down and during the commencement of their upward stroke, dogs on the frame for engaging said tappets and hold ing said bars in elevated and inoperative positions and means for shifting said dogs to carry said tappets into the paths of said radial arms.

7. A tamping machine comprising a sup porting frame, a series of tamping bars arranged in spaced relation transversely of the frame, means for guiding the tamping bars vertically, and means for lifting and dropping the tamping bars in succession, said means comprising a shaft journaled transversely of the frame adjacent to the stamps, a radial arm on the shaft for each tamping bar, said arms being spaced angularly and laterally, a rod pivotally connected with each tamping bar and provided with a tappet at its upper end, each of the radial arms having an angular portion for engaging the tappet of the rod of the ad jacent tamping bar, means for rotating the shaft, and means for holding the tamping bars elevated and out of position for engagement by the arms on the shaft, said means comprising a dog pivoted adjacent to each tamping bar for engaging beneath the tappet of a rod to hold the tamping bar from downward movement and means for simultaneously swinging the dogs to shift said rods and operatively connect said tamping bars and arms.

8. A tamping machine comprising a sup porting frame, a series of tan'lping bars arranged in spaced relation transversely of the frame, means for gl'iiding the tamping bars vertically, and means for lifting and dropping the tamping bars, said means comprising a shaft jonrnaled transversely of the frame adjacent to the tamping bars, a radial arm on the shaft for each tamping bar, said arms being spaced apart and ad j ustable angularly and laterally thereon, a rod pivotally connected with each tamping bar and provided with a tappct at its upper end, each of the radial arms having an angular portion for engaging the tappet on 1 the rod of the adjacent tamping bar and means for rotating the shaft.

9. In a device of the class described, the combination of a frame, vertically movable tamping bars on said frame adapted to fall by gravity, a rod pivotally connected with each bar and provided with a tappet, power driven arms for raising said bars respectively, adjustable guides for said rods adapted to normally locate the tappets in positions in the paths of said arms, when said bars are lowered, and out of said paths, when the bars are elevated, dogs on the frame, and means for shifting the dogs, said dogs being designed to engage the tappets and secure the bars in elevated inoperative positions and also to spring said rods over their guides and locate the tappets within the paths of said arms.

In testimony whereof, T have signed my name to this s ecification in the presence of two subscribing witnesses.

OLIVER NOLAN.

\Vitnesses WV. ll. \VJLLTAMS, Fmu) C. (laswnnn.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, 1). C.

It is hereby certified that in Letters Patent No. 1,072,355, granted September 2, 1913, upon the application of Oliver Nolan, of St. Paul, Minnesota, for an improvement in Tamping-l/Iachines, an error appears in the printed specification requiring correction as follows: Page 1, line 71, for the reference-nunieral 23 read and that the said Letters Patent should be read with this correction therein that the same may conform to the record of the case in the Patent Olfice.

Signed and sealed this 18th day of November, A. D., 1913.

[SEAL] R. T. FRAZIER,

Acting Commissioner 0 f Patents. 

